<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
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    <title>Document</title>
    <style>
        .box{
            width: 0px;
            height: 0px;
            border-width: 40px;
            border-style: solid;
            border-color: rgb(79, 173, 213) rgb(230, 80, 172) rgb(226, 200, 52) rgb(10, 10, 250);
        }
    </style>
</head>
<body>
    <div class="box">

    </div>
</body>
</html>